R253.250

厂商：
LITTELFUSE
封装：
描述：
R253.250 - Axial Lead and Cartridge Fuses - Subminiature - Littelfuse

数据手册：

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R253.250 数据手册

Next Previous Axial Lead and Cartridge Fuses Subminiature PICO® II Very Fast-Acting Fuse 251/253 The PICO® II very fast-acting fuse is designed to meet an extensive array of performance characteristics in a space-saving subminiature package. ® ® QPL ELECTRICAL CHARACTERISTICS: % of Ampere Rating 100% 200% Ampere Rating 1/16 –15 1/16 –7 10 12 –15 Opening Time 4 hours, Minimum 1 second, Maximum 3 seconds, Maximum 10 seconds, Maximum AGENCY APPROVALS: Recognized under the Components Program of Underwriters Laboratories and Certified by CSA. Approved by METI from 1 through 5 amperes. AGENCY FILE NUMBERS: UL E10480, CSA LR 29862. REFERENCE TO MIL SPEC: Available in FM10 on QPL for MIL-PRF-23419. To order, change 251 to 253 as shown below. 38.1 (1.5") 7.11 (.280") REF. 38.1 (1.5") 2.41 (.095") DIA. REF. INTERRUPTING RATINGS: 300 amperes at rated voltage VDC. 50 amperes at rated voltage VAC. 0.64 (.025") DIA. F L 1A ENVIRONMENTAL SPECIFICATIONS: Operating Temperature: –55°C to 125°C. Shock: MIL-STD-202, Method 213, Test Condition I (100 G’s peak for 6 milliseconds). Vibration: MIL-STD-202, Method 201 (10–55 Hz); Method 204, Test Condition C (55–2000 Hz at 10 G’s Peak). Moisture Resistance: MIL-STD-202, Method 106. EPOXY COATING NOTE: .025" diameter for 1/16 –10A, .032" diameter for 12 –15A. Average Time Current Curves 1/4A 3/8A 1/2A 3/4A 1A 1 1/2A 2A 2 1/2A 3A 3 1/2A 4A 5A 7A 10A 12A 15A 1 10 100 CURRENT IN AMPERES 1/16A 1/8A PHYSICAL SPECIFICATIONS: Materials: Encapsulated, Epoxy-Coated Body; Solder Coated Copper Wire Leads. 100 Flammability Rating: UL 94V0 Soldering Parameters: Wave Solder — 260°C, 10 seconds maximum. Solderability: MIL-STD-202, Method 208. Lead Pull Force: MIL-STD-202, Method 211, Test Condition A (will withstand a 7 lb. axial pull test). 10 TIME IN SECONDS PACKAGING SPECIFICATIONS: Tape and Reel per EIA-296; T1: 2.062" (52.4mm) taped spacing; 5,000 per reel. Option: Radial Lead Version; 0.4" lead spacing; to order, change 251 to 252. PATENTED ORDERING INFORMATION: Std. Type Catalog Number R251.062 R251.125 R251.250 R251.375 R251.500 R251.750 R251 001 R251 01.5 R251 002 R251 02.5 R251 003 R251 03.5 R251 004 R251 005 R251 007 R251 010 R251 012 R251 015 Mil. Type Catalog Number R253.062 R253.125 R253.250 R253.375 R253.500 R253.750 R253 001 R253 01.5 R253 002 R253 003 R253 004 R253 005 R253 007 R253 010 R253 015 Ampere Rating 1/16 1/8 1/4 3/8 1/2 3/4 1 11/2 2 21/2 3 31/2 4 5 7 10 12 15 Voltage Rating 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 32 32 Nominal Resistance Cold Ohms 7.0 1.70 0.665 0.395 0.280 0.175 0.128 0.0823 0.0473 0.0360 0.0290 0.0240 0.0204 0.0155 0.0105 0.00705 0.0055 0.00446 Nominal Melting I 2t A2 Sec. 0.000113 0.00174 0.0116 0.0296 0.0598 0.153 0.256 0.587 0.405 0.721 1.19 1.58 2.45 4.14 10.4 25.5 45.2 68.8 1 0.1 0.01 0.001 0.05 0.1 1000 Note: Higher Ampere Ratings Available. Contact Technical Assistance for Details 280 w w w. l i t t e l f u s e . c o m

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R253.250

1. 物料型号： - 标准型号目录编号：R251.062, R251.125, R251.250, R251.375, R251.500, R251.750, R251.001, R251.01.5, R251.002, R251.0025, R251.003, R251.0035, R251.004, R251.005, R251007, R251.010, R251.012, R251.015 - 军用型号目录编号：R253.062, R253.125, R253.250, R253.375, R253.500, R253.750, R253.001, R253.01.5, R253.002, R253.0025, R253.003, R253.0035, R253.004, R253.005, R253.007, R253.010, R253.012, R253.015

2. 器件简介： - PICO® II超快速作用保险丝旨在满足广泛的性能特性，同时采用节省空间的亚小型封装。

3. 引脚分配： - 引脚为轴向引线，具体尺寸为0.4英寸引线间距，用于订购时将251型号更改为252。

4. 参数特性： - 电气特性包括安培额定值的百分比、安培额定值和断开时间。例如，100%安培额定值为1/16-15，最短断开时间为4小时；200%安培额定值为1/16-7，最长断开时间为1秒。 - 中断额定值为300安培直流电和50安培交流电。 - 工作温度范围为-55°C至125°C。

5. 功能详解： - 该保险丝被认可为UL组件计划的一部分，并通过CSA认证。它符合MIL-PRF-23419军用规格，并可在FM10 QPL上订购。

6. 应用信息： - 适用于需要快速断开保护的应用场合，特别是在军事和高可靠性要求的领域。

7. 封装信息： - 封装材料为环氧树脂涂层封装体和镀锡铜线引线。 - 包装规格为EIA-296标准的胶带和卷轴，2.062英寸（52.4毫米）胶带间距，每卷5000个。

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